42131

LEGO Technic set 42131, “Cat D11 Bulldozer”, depicts a tracked construction bulldozer inspired by a Caterpillar machine. Released in 2021 under the Technic theme, it contains 3854 pieces and includes no minifigures.

This model belongs to the Technic tradition of functional construction machinery. Its tracked base, front blade and rear ripper identify it as a Cat D11 Bulldozer, with the focus placed on the vehicle’s engineering and working features rather than on a character-based scene.

The build uses 3854 pieces and creates a dense Technic structure designed around movement and mechanical detail. There are no named figures or minifigures in the set. Notable known features include the tracks, movable work equipment and app-controlled motorisation, all tied to the model’s construction-vehicle subject.

The set is aimed at Technic builders who are interested in heavy machinery for display, handling and functional play. Within the theme, it sits among large construction-vehicle models, where its appeal comes from the mechanical layout, licensed subject and strong shelf presence.